java.math.BigInteger.probablePrime()方法的使用及代码示例

x33g5p2x  于2022-01-16 转载在 其他  
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本文整理了Java中java.math.BigInteger.probablePrime()方法的一些代码示例,展示了BigInteger.probablePrime()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台,是从一些精选项目中提取出来的代码,具有较强的参考意义,能在一定程度帮忙到你。BigInteger.probablePrime()方法的具体详情如下:
包路径:java.math.BigInteger
类名称:BigInteger
方法名:probablePrime

BigInteger.probablePrime介绍

[英]Returns a random positive BigInteger instance in the range [0, pow(2, bitLength)-1] which is probably prime. The probability that the returned BigInteger is prime is greater than 1 - 1/2100).
[中]返回范围为[0,pow(2,bitLength)-1]的随机正BigInteger实例,该范围可能为素数。返回的BigInteger为素数的概率大于1-1/2100)。

代码示例

代码示例来源:origin: kevin-wayne/algs4

private static long longRandomPrime() {
  BigInteger prime = BigInteger.probablePrime(31, new Random());
  return prime.longValue();
}

代码示例来源:origin: apache/geode

private static Callable<BigInteger> generateProbablePrimes() {
 return () -> {
  Random random = new Random();
  // To keep the CPU busy, we must prevent the Java and JIT compilers from optimizing this loop
  // out of existence. To do that, we save the the most recently generated prime, and return it
  // when the task is cancelled. Our assumption is that the compilers can't predict that the
  // return value is unused, and is therefore forced to calculate a new prime on each iteration.
  BigInteger prime = BigInteger.valueOf(0);
  while (!Thread.currentThread().isInterrupted()) {
   prime = BigInteger.probablePrime(1000, random);
  }
  return prime;
 };
}

代码示例来源:origin: google/guava

@GwtIncompatible // isPrime is GWT-incompatible
public void testIsPrimeOnRandomComposites() {
 Random rand = new Random(1);
 for (int bits = 5; bits < 32; bits++) {
  for (int i = 0; i < 100; i++) {
   long p = BigInteger.probablePrime(bits, rand).longValue();
   long q = BigInteger.probablePrime(bits, rand).longValue();
   assertFalse(LongMath.isPrime(p * q));
  }
 }
}

代码示例来源:origin: google/guava

@GwtIncompatible // isPrime is GWT-incompatible
public void testIsPrimeOnRandomPrimes() {
 Random rand = new Random(1);
 for (int bits = 10; bits < 63; bits++) {
  for (int i = 0; i < 100; i++) {
   long p = BigInteger.probablePrime(bits, rand).longValue();
   assertTrue(LongMath.isPrime(p));
  }
 }
}

代码示例来源:origin: ethereum/ethereumj

private List<BlockInfo> generateBlockInfos(int count) {
  List<BlockInfo> blockInfos = new ArrayList<>();
  for (int i = 0; i < count; i++) {
    BlockInfo blockInfo = new BlockInfo();
    blockInfo.setHash(sha3(ByteUtil.intToBytes(i)));
    blockInfo.setTotalDifficulty(BigInteger.probablePrime(512, rnd));
    blockInfo.setMainChain(rnd.nextBoolean());
    blockInfos.add(blockInfo);
  }
  return blockInfos;
}

代码示例来源:origin: stackoverflow.com

public void run() {
    while(true) 
    BigInteger.probablePrime(MAX_PRIORITY, new Random());
  };
}.start();

代码示例来源:origin: stackoverflow.com

int bitLength = 1024;
SecureRandom rnd = new SecureRandom();
BigInteger p = BigInteger.probablePrime(bitLength, rnd);
BigInteger g = BigInteger.probablePrime(bitLength, rnd);

代码示例来源:origin: timtiemens/secretshare

public static BigInteger createPrimeBigger(BigInteger valueThatDeterminesNumberOfBits,
                      Random random)
{
  int numbits = valueThatDeterminesNumberOfBits.bitLength() + 1;
  BigInteger ret = BigInteger.probablePrime(numbits, random);
  return ret;
}

代码示例来源:origin: stackoverflow.com

BigInteger definitePrime(int bits, Random rnd) {
  BigInteger prime = new BigInteger("4");
  while(!isPrime(prime)) prime = BigInteger.probablePrime(bits,rnd);
  return prime;
}

代码示例来源:origin: com.musala.atmosphere/atmosphere-bitmap-comparison

/** generate a random 31 bit prime **/
private static long longRandomPrime() {
  BigInteger prime = BigInteger.probablePrime(31, new Random());
  return prime.longValue();
}

代码示例来源:origin: edu.princeton.cs/algs4

private static long longRandomPrime() {
  BigInteger prime = BigInteger.probablePrime(31, new Random());
  return prime.longValue();
}

代码示例来源:origin: brianway/algorithms-learning

private static long longRandomPrime() {
  BigInteger prime = BigInteger.probablePrime(31, new Random());
  return prime.longValue();
}

代码示例来源:origin: com.wizzardo.tools/tools-security

public RSA(int n) {
  this.n = n;
  BigInteger p = BigInteger.probablePrime(n / 2, random);
  BigInteger q = BigInteger.probablePrime(n / 2, random);
  BigInteger phi = (p.subtract(one)).multiply(q.subtract(one));
  modulus = p.multiply(q);
  publicKey = new BigInteger("65537");     // common value in practice = 2^16 + 1
  privateKey = publicKey.modInverse(phi);
}

代码示例来源:origin: wizzardo/tools

public RSA(int n) {
  this.n = n;
  BigInteger p = BigInteger.probablePrime(n / 2, random);
  BigInteger q = BigInteger.probablePrime(n / 2, random);
  BigInteger phi = (p.subtract(one)).multiply(q.subtract(one));
  modulus = p.multiply(q);
  publicKey = new BigInteger("65537");     // common value in practice = 2^16 + 1
  privateKey = publicKey.modInverse(phi);
}

代码示例来源:origin: SomMeri/matasano-cryptopals-solutions

private void crashingGenerateKeyPair(SecureRandom random, int primesBits) {
 BigInteger p = BigInteger.probablePrime(primesBits, random);
 BigInteger q = BigInteger.probablePrime(primesBits, random);
 n = p.multiply(q);
 BigInteger et = p.add(BigInteger.ONE.negate()).multiply(q.add(BigInteger.ONE.negate()));
 e = BigInteger.valueOf(3);
 d = e.modInverse(et);
}

代码示例来源:origin: stackoverflow.com

BigInteger e = new BigInteger("65537"); //to make the compiler happy
 BigInteger counter = (BigInteger.probablePrime(128, random)).mod(phi);
 while(counter.intValue() > 2)
 {
   if((e.gcd(phi)).intValue() == 1)
   {
     e = counter;
     break;
   }
   counter = counter.subtract(BigInteger.ONE);
 }

代码示例来源:origin: com.google.guava/guava-tests

@GwtIncompatible // isPrime is GWT-incompatible
public void testIsPrimeOnRandomComposites() {
 Random rand = new Random(1);
 for (int bits = 5; bits < 32; bits++) {
  for (int i = 0; i < 100; i++) {
   long p = BigInteger.probablePrime(bits, rand).longValue();
   long q = BigInteger.probablePrime(bits, rand).longValue();
   assertFalse(LongMath.isPrime(p * q));
  }
 }
}

代码示例来源:origin: com.google.guava/guava-tests

@GwtIncompatible // isPrime is GWT-incompatible
public void testIsPrimeOnRandomPrimes() {
 Random rand = new Random(1);
 for (int bits = 10; bits < 63; bits++) {
  for (int i = 0; i < 100; i++) {
   long p = BigInteger.probablePrime(bits, rand).longValue();
   assertTrue(LongMath.isPrime(p));
  }
 }
}

代码示例来源:origin: org.eclipse.microprofile.jwt/microprofile-jwt-auth-tck

@Test(groups = TCKConstants.TEST_GROUP_DEBUG,
  description = "Validate how to use the HS256 signature alg")
public void testHS256() throws Exception {
  JWTClaimsSet claimsSet = JWTClaimsSet.parse("{\"sub\":\"jdoe\"}");
  SignedJWT signedJWT = new SignedJWT(new JWSHeader(JWSAlgorithm.HS256), claimsSet);
  SecureRandom random = new SecureRandom();
  BigInteger secret = BigInteger.probablePrime(256, random);
  JWSSigner signer = new MACSigner(secret.toByteArray());
  signedJWT.sign(signer);
}

代码示例来源:origin: apache/ace

private X509Certificate generateRootCertificate(String commonName, Date notBefore, Date notAfter) throws Exception {
    X500Name issuer = new X500Name(commonName);
    BigInteger serial = BigInteger.probablePrime(16, new Random());

    SubjectPublicKeyInfo pubKeyInfo = convertToSubjectPublicKeyInfo(m_caKey.getPublic());

    X509v3CertificateBuilder builder = new X509v3CertificateBuilder(issuer, serial, notBefore, notAfter, issuer, pubKeyInfo);
    builder.addExtension(new Extension(Extension.basicConstraints, true, new DEROctetString(new BasicConstraints(true))));

    X509CertificateHolder certHolder = builder.build(new JcaContentSignerBuilder(SIGNATURE_ALGORITHM).build(m_caKey.getPrivate()));
    return new JcaX509CertificateConverter().getCertificate(certHolder);
  }
}

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